Harmonized System Code Classification

90开头HS codes typically represent optical, photographic, cinematographic, measuring, testing, analyzing, and control instruments, apparatus, and parts thereof.

Specifically, the 90 category includes the following main categories:

• Optical instruments: Including eyeglasses, telescopes, microscopes, prisms, lenses, etc.
• Photographic equipment: Including cameras, video cameras, film, developing equipment, etc.
• Measuring instruments: Including instruments for measuring length, weight, volume, angle, temperature, pressure, and so on.
• Testing and analyzing instruments: Including laboratory equipment, chemical analysis instruments, physical testing instruments, etc.
• Control instruments: Including automatic control devices, alarm devices, flow meters, etc.

Reason for classification:

These products are all related to precise measurement, observation, analysis, and control, and have wide applications in scientific research, industrial production, medical health, environmental protection, and other fields. Therefore, customs classify them under category 90 to facilitate the management and statistics of such high-tech and precision instruments.

In summary, HS codes starting with 90 represent high-precision measuring, analyzing, and control tools used in science, technology, and industry.

First four digits explanation: 9029 represents:

Revolving counters, production counters, odometers, mileage indicators, pedometers, etc.; speedometers and tachometers, excluding those under headings 9014 or 9015; stroboscopes; their parts and accessories.

Six-digit explanation: HS code: 9029.20

Classification: Revolving counters, production counters, odometers, mileage indicators, pedometers, etc.; speedometers and tachometers (excluding those under chapters 9014 or 9015); stroboscopes; their parts and accessories.

Specific meaning: Speedometers and tachometers; stroboscopes.

Eight to ten-digit explanation: HS code: 9029206000

Classification: Revolving counters, production counters, odometers, mileage indicators, pedometers, etc.; speedometers and tachometers (excluding those under headings 9014 or 9015); stroboscopes; their parts and accessories: --> speedometers and tachometers; stroboscopes: --> stroboscopes

Explanation: This HS code belongs to revolving counters, production counters, odometers, mileage indicators, pedometers, etc., speedometers and tachometers (excluding those under headings 9014 or 9015), stroboscopes, and their parts and accessories.

Product examples: * Stroboscope (stroboscopic light) * Speedometer for vehicles * Tachometer for engines * Pedometer * Odometer for bicycles * Revolving counter for production lines * Stroboscope parts and accessories